Diesel exhaust fluid (DEF; also known as AUS 32 and sometimes marketed as AdBlue[3]) is a liquid used to reduce the amount of air pollution created by a diesel engine. Specifically, DEF is an …

Feb 10, 2025 · It’s called DEF for short, but the very first thing you may be wondering is what on earth is diesel exhaust fluid, and the answer is quite simple: it’s a fluid that gets injected into the exhaust …

Jul 29, 2024 · The number of miles you can drive before you need to refill your DEF depends on the vehicle's engine and its consumption. Most tanks use about a gallon of DEF for every 50 gallons of …

Reduce emissions and keep your diesel vehicle running clean with diesel exhaust fluid (DEF) from AutoZone. We sell the best brands, including AutoZone, Lumax, and Peak Blue DEF fluid.

Nov 17, 2025 · Failing to see the word's antecedents, I suspected that def was either bogus or an orphan, lost to its slang ancestors through mispronunciation or misspelling […]

Dec 5, 2016 · What does the abbreviation DEF stand for? Meaning: defendant; defense. How to use def in a sentence.

8 meanings: slang very good, esp of hip-hop definition → 1. a formal and concise statement of the meaning of a word, phrase,.... Click for more definitions.

When you can't stop scrolling, it shows. Pass the vibe check, or get called out. The world's leading online dictionary: English definitions, synonyms, word origins, example sentences, word games, and …

Dec 8, 2021 · DEF stands for diesel exhaust fluid and can help you meet those regulations and keep your operations on track. The fluid reduces pollutant emissions and may help you stay compliant, …

Excellent; first-rate. [Short for definite.] American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton …